| 摘要 |
PURPOSE:To protect a flexible board from warping and prevent a thin film from hosing its function due to the stress of said thin film formed on said flexible board. CONSTITUTION:A first thin film 2 and a second thin film 3 are formed on a flexible board wherein the first thin film 2 has compression stress against the flexible board 1 while the second thin film 3 has tensile stress against the board 1. |
